diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_display_power_well.h')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display_power_well.h | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display_power_well.h b/drivers/gpu/drm/i915/display/intel_display_power_well.h new file mode 100644 index 000000000..ba7cb977e --- /dev/null +++ b/drivers/gpu/drm/i915/display/intel_display_power_well.h @@ -0,0 +1,177 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2022 Intel Corporation + */ +#ifndef __INTEL_DISPLAY_POWER_WELL_H__ +#define __INTEL_DISPLAY_POWER_WELL_H__ + +#include <linux/types.h> + +#include "intel_display_power.h" +#include "intel_dpio_phy.h" + +struct drm_i915_private; +struct i915_power_well; + +#define for_each_power_well(__dev_priv, __power_well) \ + for ((__power_well) = (__dev_priv)->display.power.domains.power_wells; \ + (__power_well) - (__dev_priv)->display.power.domains.power_wells < \ + (__dev_priv)->display.power.domains.power_well_count; \ + (__power_well)++) + +#define for_each_power_well_reverse(__dev_priv, __power_well) \ + for ((__power_well) = (__dev_priv)->display.power.domains.power_wells + \ + (__dev_priv)->display.power.domains.power_well_count - 1; \ + (__power_well) - (__dev_priv)->display.power.domains.power_wells >= 0; \ + (__power_well)--) + +/* + * i915_power_well_id: + * + * IDs used to look up power wells. Power wells accessed directly bypassing + * the power domains framework must be assigned a unique ID. The rest of power + * wells must be assigned DISP_PW_ID_NONE. + */ +enum i915_power_well_id { + DISP_PW_ID_NONE = 0, /* must be kept zero */ + + VLV_DISP_PW_DISP2D, + BXT_DISP_PW_DPIO_CMN_A, + VLV_DISP_PW_DPIO_CMN_BC, + GLK_DISP_PW_DPIO_CMN_C, + CHV_DISP_PW_DPIO_CMN_D, + HSW_DISP_PW_GLOBAL, + SKL_DISP_PW_MISC_IO, + SKL_DISP_PW_1, + SKL_DISP_PW_2, + ICL_DISP_PW_3, + SKL_DISP_DC_OFF, + TGL_DISP_PW_TC_COLD_OFF, +}; + +struct i915_power_well_instance { + const char *name; + const struct i915_power_domain_list { + const enum intel_display_power_domain *list; + u8 count; + } *domain_list; + + /* unique identifier for this power well */ + enum i915_power_well_id id; + /* + * Arbitraty data associated with this power well. Platform and power + * well specific. + */ + union { + struct { + /* + * request/status flag index in the PUNIT power well + * control/status registers. + */ + u8 idx; + } vlv; + struct { + enum dpio_phy phy; + } bxt; + struct { + /* + * request/status flag index in the power well + * constrol/status registers. + */ + u8 idx; + } hsw; + struct { + u8 aux_ch; + } xelpdp; + }; +}; + +struct i915_power_well_desc { + const struct i915_power_well_ops *ops; + const struct i915_power_well_instance_list { + const struct i915_power_well_instance *list; + u8 count; + } *instances; + + /* Mask of pipes whose IRQ logic is backed by the pw */ + u16 irq_pipe_mask:4; + u16 always_on:1; + /* + * Instead of waiting for the status bit to ack enables, + * just wait a specific amount of time and then consider + * the well enabled. + */ + u16 fixed_enable_delay:1; + /* The pw is backing the VGA functionality */ + u16 has_vga:1; + u16 has_fuses:1; + /* + * The pw is for an ICL+ TypeC PHY port in + * Thunderbolt mode. + */ + u16 is_tc_tbt:1; +}; + +struct i915_power_well { + const struct i915_power_well_desc *desc; + struct intel_power_domain_mask domains; + /* power well enable/disable usage count */ + int count; + /* cached hw enabled state */ + bool hw_enabled; + /* index into desc->instances->list */ + u8 instance_idx; +}; + +struct i915_power_well *lookup_power_well(struct drm_i915_private *i915, + enum i915_power_well_id id); + +void intel_power_well_enable(struct drm_i915_private *i915, + struct i915_power_well *power_well); +void intel_power_well_disable(struct drm_i915_private *i915, + struct i915_power_well *power_well); +void intel_power_well_sync_hw(struct drm_i915_private *i915, + struct i915_power_well *power_well); +void intel_power_well_get(struct drm_i915_private *i915, + struct i915_power_well *power_well); +void intel_power_well_put(struct drm_i915_private *i915, + struct i915_power_well *power_well); +bool intel_power_well_is_enabled(struct drm_i915_private *i915, + struct i915_power_well *power_well); +bool intel_power_well_is_enabled_cached(struct i915_power_well *power_well); +bool intel_display_power_well_is_enabled(struct drm_i915_private *dev_priv, + enum i915_power_well_id power_well_id); +bool intel_power_well_is_always_on(struct i915_power_well *power_well); +const char *intel_power_well_name(struct i915_power_well *power_well); +struct intel_power_domain_mask *intel_power_well_domains(struct i915_power_well *power_well); +int intel_power_well_refcount(struct i915_power_well *power_well); + +void chv_phy_powergate_lanes(struct intel_encoder *encoder, + bool override, unsigned int mask); +bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy, + enum dpio_channel ch, bool override); + +void gen9_enable_dc5(struct drm_i915_private *dev_priv); +void skl_enable_dc6(struct drm_i915_private *dev_priv); +void gen9_sanitize_dc_state(struct drm_i915_private *dev_priv); +void gen9_set_dc_state(struct drm_i915_private *dev_priv, u32 state); +void gen9_disable_dc_states(struct drm_i915_private *dev_priv); +void bxt_enable_dc9(struct drm_i915_private *dev_priv); +void bxt_disable_dc9(struct drm_i915_private *dev_priv); + +extern const struct i915_power_well_ops i9xx_always_on_power_well_ops; +extern const struct i915_power_well_ops chv_pipe_power_well_ops; +extern const struct i915_power_well_ops chv_dpio_cmn_power_well_ops; +extern const struct i915_power_well_ops i830_pipes_power_well_ops; +extern const struct i915_power_well_ops hsw_power_well_ops; +extern const struct i915_power_well_ops gen9_dc_off_power_well_ops; +extern const struct i915_power_well_ops bxt_dpio_cmn_power_well_ops; +extern const struct i915_power_well_ops vlv_display_power_well_ops; +extern const struct i915_power_well_ops vlv_dpio_cmn_power_well_ops; +extern const struct i915_power_well_ops vlv_dpio_power_well_ops; +extern const struct i915_power_well_ops icl_aux_power_well_ops; +extern const struct i915_power_well_ops icl_ddi_power_well_ops; +extern const struct i915_power_well_ops tgl_tc_cold_off_ops; +extern const struct i915_power_well_ops xelpdp_aux_power_well_ops; + +#endif |